Schneider Electric HGO-3 Direct Current Contactor

Schneider Electric's Square D Class 7004 Type HGO-3 direct current contactor is a DC magnetic switch designed to control DC power in electrical control panels and industrial equipment. The HGO-3 model is a member of the Class 7004 line of Square D DC contactors, built for reliable remote control of DC loads in applications such as motors, conveyors, and automation systems. As a Class 7004 device, it follows the DC line-arc style and integrates with other Type H contour families within the Square D lineup, offering consistent operation and physical compatibility with matching accessories and interlocks designed for DC service. The HGO-3 designation identifies the exact size and configuration within the Type H family, enabling engineers to select a compatible coil drive and contact arrangement for DC control circuits. In practice, the HGO-3 is used where a robust, maintenance-friendly DC contactor is required to switch power to a load under control signals from a PLC or control relay, with isolation between the control circuit and the load side. For legacy installations and retrofits, the HGO-3 provides a drop-in option within the Square D 7004 universe, maintaining alignment with the brand's DC contactor standards and ensuring predictable, durable performance in demanding DC switching tasks.